Troubleshooting

(STDERR) Error: The babel-runtime npm package could not be found in your node_modules
(STDERR) directory. Please run the following command to install it:
(STDERR)(STDERR) meteor npm install --save babel-runtime
(STDERR)(...)=> Exited with code: 1
=> Your application is crashing. Waiting for file change.

Just install the mentioned package with the following command:

meteor npm install --save babel-runtime

bcrypt:

If you see the following warning in the meteor logs:

(STDERR) Note: you are using a pure-JavaScript implementation of bcrypt.
(STDERR) While this implementation will work correctly, it is known to be
(STDERR) approximately three times slower than the native implementation.
(STDERR) In order to use the native implementation instead, run
(STDERR)(STDERR) meteor npm install --save bcrypt
(STDERR)

Don’t panic =) It means that the bcrypt library is not installed on your
system and meteor will use a javascript alternative that is about three
times slower.

If you want to install the library to make it faster, use the following
command:

meteor npm install --save bcrypt

If the version of the python interpreter on your system is greater than
v2.5.0 or less than 3.0.0, it should work fine, but, if you see a message
like this: